Credit Suisse exec Bob Jain threw a party at his $15 million Southampton mansion, and things got weird

A promotional image for the gala on the Watermill Center's website.
Water Mill Center
Gesturing toward a man with his eyes closed and an arm flung over his head, former AOL senior executive Tatiana Platt exclaimed: "We have one really big surprise tonight — somebody already went to bed!"

That comes from a series of Instagram posts taken by Platt at a private avant-garde party hosted by Credit Suisse Asset Management chief Bob Jain and his wife, Carola Jain, reported Page Six's Ian Mohr.

The party was hosted in Southampton, New York, on Sunday.

The "sleeping" man was a model in an art installation — who, to his credit, doesn't crack a smile in the video.

The dinner, hosted on behalf of the Watermill Center (which brings attention to rising young artists), was a preview for the center's 22nd annual gala on July 25.

Guests were later taken to a "subterranean" disco party to "dance til dawn," Mohr reported.

Former AOL executive Tatiana Platt put a series of posts on Instagram documenting her commentary on the artwork.

VIDEO Part 2: Advance peek celebration of the @bob___wilson @WatermillCenter: a pink bubble man, or is it a woman? #performance #theater #art #wmcbenefit #wmcgala July 25th www.watermillcenter.org/benefit

A video posted by @tatianaplatt on Jul 18, 2015 at 9:31am PDT

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The private party was held at Bob Jain's $15 million Southampton, New York, property.

Tatiana Platt takes a look at another piece of artwork on display as the party amps up.

VIDEO Part 3: Advance peek celebration of the @bob___wilson @WatermillCenter: a fruit tower and a girl in a #bikini #performance #theater #art #wmcbenefit #wmcgala July 25th www.watermillcenter.org/benefit

A video posted by @tatianaplatt on Jul 18, 2015 at 9:33am PDT

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And the final part offers a glimpse of the party's most exciting feature: